<div style="font-size: 15px;" class="js_message" id="js_message" title="{JS_MESSAGE_TITLE}">
        <br>{JS_MESSAGE}<br>
</div>


<script type="text/javascript">
    jQuery(function(){
              jQuery("#js_message").dialog({
                                autoOpen: true,
                                position: 'center',
                                modal: true,
                                resizable:false,
                                width:300,
                                buttons:    {
                                            "Ok": function() {
                                                             jQuery(this).dialog("close");
                                                             }
                                            }
                                  });


    });

</script>